linux/drivers/i2c
Evan Nimmo 0a355aeb24 i2c: algo: pca: Reapply i2c bus settings after reset
If something goes wrong (such as the SCL being stuck low) then we need
to reset the PCA chip. The issue with this is that on reset we lose all
config settings and the chip ends up in a disabled state which results
in a lock up/high CPU usage. We need to re-apply any configuration that
had previously been set and re-enable the chip.

Signed-off-by: Evan Nimmo <evan.nimmo@alliedtelesis.co.nz>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2020-09-09 10:22:40 +02:00
..
algos i2c: algo: pca: Reapply i2c bus settings after reset 2020-09-09 10:22:40 +02:00
busses i2c: npcm7xx: Fix timeout calculation 2020-09-08 08:24:59 +02:00
muxes Merge branch 'i2c/for-current-fixed' into i2c/for-5.8 2020-05-20 15:27:45 +02:00
i2c-boardinfo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-core-acpi.c i2c: acpi: Remove dead code, i.e. i2c_acpi_match_device() 2020-08-25 09:22:09 +02:00
i2c-core-base.c i2c: core: Don't fail PRP0001 enumeration when no ID table exist 2020-08-25 09:21:55 +02:00
i2c-core-of.c i2c: use my kernel.org address from now on 2020-05-05 16:29:09 +02:00
i2c-core-slave.c i2c: slave: add sanity check when unregistering 2020-07-28 18:37:17 +02:00
i2c-core-smbus.c i2c: core: check returned size of emulated smbus block read 2020-06-26 10:18:35 +02:00
i2c-core.h i2c: acpi: Remove dead code, i.e. i2c_acpi_match_device() 2020-08-25 09:22:09 +02:00
i2c-dev.c i2c: Use separate MODULE_AUTHOR() statements for multiple authors 2020-07-04 08:25:13 +02:00
i2c-mux.c i2c: mux: add sysfs header 2019-06-22 07:32:33 +02:00
i2c-slave-eeprom.c i2c: busses: Use fallthrough pseudo-keyword 2020-07-23 22:04:08 +02:00
i2c-smbus.c i2c: smbus: Add a way to instantiate SPD EEPROMs automatically 2020-05-29 12:53:04 +02:00
i2c-stub.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
Kconfig i2c: add Kconfig help text for slave mode 2020-07-04 08:17:53 +02:00
Makefile i2c: don't use any __deprecated handling anymore 2018-08-24 17:26:43 +02:00